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InicioCiencia y TecnologíaAño 2100: El Ártico sin hielo y los corales en extinción. Adaptación...

Año 2100: El Ártico sin hielo y los corales en extinción. Adaptación o morir en el intento

Planeta Tierra, una imagen creada a través de fotografías tomadas por el satélite Suomi NPP. Foto: NASA.


Reducir el calentamiento global en 0,°5 es la diferencia entre la vida y la muerte



Limitar el calentamiento para dar más margen de adaptación a las personas y los ecosistemas


PERÚ BICENTENARIO

“Para el año 2100 la elevación del nivel del mar sería de 10 centímetros inferior con un calentamiento global de 1,5 °C en vez de 2 °C. La probabilidad de que el océano Ártico quede libre de hielo en verano sería de una vez por siglo con medio grado menos, frente a una vez cada década. Los arrecifes de coral disminuirían entre un 70% y un 90%, pero desaparecerían completamente a  2°C”, aseguró Houesung Lee, presidente del Grupo Intergubernamental de Expertos sobre el Cambio Climático (IPCC), durante una reciente conferencia de prensa en Incheon, Corea del Sur.

En esta ciudad vecina a Seúl, el IPCC reveló un informe que resalta que se necesitan cambios de gran alcance y sin precedentes en todos los aspectos de la sociedad para limitar el calentamiento global a 1,5 °C en lugar de 2 °C como se establece en el Acuerdo de París, una medida que evitaría una serie de graves impactos del cambio climático, traería beneficios claros para los seres humanos y los ecosistemas, así como la posibilidad de una sociedad más sostenible y equitativa.

El informe será una contribución científica fundamental para la Conferencia sobre el Cambio Climático que se celebrará este diciembre en Katowice, Polonia, donde los gobiernos examinarán los avances en el Acuerdo de París.

En nota de prensa difundida por la ONU se señala que con más de 6,000 referencias citadas y la contribución abnegada de miles de examinadores expertos y gubernamentales de todo el mundo, unos 91 autores y editores-revisores de 40 países han preparado el informe del IPCC en respuesta a una invitación hecha por la Convención Marco de las Naciones Unidas sobre el Cambio Climático (CMNUCC) cuando aprobó el Acuerdo de París en 2015.

Por su parte, el copresidente del grupo de trabajo II del IPCC, Panmao Zhai, señaló que: “Uno de los mensajes fundamentales arrojado de forma contundente por el informe es que ya estamos viviendo las consecuencias de un calentamiento global de 1 °C, con condiciones meteorológicas más extremas, crecientes niveles del mar y un hielo marino menguante en el Ártico, entre otros cambios”.

Según la ONU, el informe resalta que cada grado de calentamiento tiene importancia, y puede representar un riesgo de cambios duraderos e irreversibles y la pérdida de algunos ecosistemas.

Limitar el calentamiento también daría más margen a las personas y los ecosistemas para adaptarse y permanecer debajo de los umbrales de riesgo.

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